With The manner in which cdn;s like cloud-flare for example , store and serve data , are there any effects on your search engine rankings? I.e Does it effect google spiders , does cached old content get served if you dont cache flush after updates, and the many other factors i have probably not considered.

If you are asking if it has any negative effects, - then no

Since CF essentially speeds up the website, the rankings could only get better due to the increased website speed optimisation.